Vibrator.



A. J. STECKBR.

VIBRATOR.

APPLIUATION FILED APB. 1,1909.

Patented Dec. 14,1909.

Enurninr Atturnmn UNITED STATES PATEN @F ICE.

ALFRED J. STECKER, OF DETROIT, MICHIGAN, ASSIGNOR TO EUREKA VIBRATOR 00., OF DETROIT, MICHIGAN, A CORPORATION OF MICHIGAN.

VIBRATOR.

To all whom it may concern:

Be it known that I, ALFRED J. STEOKER, a citizen of the United States, residing at Detroit, in the county of WVayne, State of Michigan, have invented certain new and useful Improvements in Vibrators; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the figures of reference marked thereon, which form a part of this specification.

This invention relates to massage vibrators, and consists in the construction and arrangement of parts hereinafter more fully set forth and claimed.

The object of the invention is to provide simple and efficient means for imparting a gyration to the arm carrying the applicator so as to induce in the applicator the required vibratory movement, provision being made for varying at will the degree of vibration in an eftieient and convenient manner. The above object is attained by the structure illustrated in the accompanying drawings, in which Figure 1 is an elevation of a vibratory instrument embodying my invention. Fig. 2 is an enlarged sectional view in detail through the end of the casing and through the operative parts mounted therein which impart a vibratory movement to the applicator, showing the position of the parts when no vibration is imparted to the applicator by the rotation of the motor shaft. Fig. 8 is a similar View showing the operative parts in elevation and the position of said parts when adjusted to cause the appli cator to vibrate through a rotation of the motor shaft. Fig. 4 is a sectional view through the block attached to the end of the motor shaft and the socket member adapted to be hinged thereto and in which the ball on the end of the vibratory arm engages, said parts being disassembled. Fig. 5 is a plan view of the block mounted on the motor shaft. Fig. 6 is a plan view of the socket member adapted to be hinged Specification of Letters Patent.

Application filed April 1, 1909.

Patented Dec. 14, 1909.

Serial No. 487,371.

to said block. Fig. 7 is a transverse section through the block and the socket member hinged thereto.

Referring to the characters of reference, 1 designates a suitable case in which is mounted a motor 2 having a shaft 8. Within the reduced outer end of the case is a ball 4 which is seated in and confined between two hemispherical shells 5 and 6, respectively, which embrace said ball, the inner shell 6 being seated in the opening in the end of the case and the outer shell being engaged by the gland 7 which screws onto the end of the case to confine and retain said parts in position therein. By adjusting said gland, any desired tension may be placed upon the parts forming the ball and socket joint, all

of which is clearly set forth in my co-pending application Serial No. 429,134.

Passing centrally through the ball and through the shells which embrace it is a vibratory arm 8 which is externally threaded near its outer end, as shown at 9, and which at its extreme outer end is provided with a tapped socket 10 into which is screwed the threaded end 11 of the arm 12 carrying the applicator 13. The arm 8 is mounted to slide longitudinally through the ball 4 but is prevented from rotating in said ball, by means of a pin 14 which passes through the end of the case, the lower shell, the ball, and enters the longitudinally extending slot 15 in said arm. Embracing the inner end of the arm 8 and confined between the collar 16 thereon and the inner shell (3 is a com pressible spring 17. Mounted upon the threaded outer end of the arm 8 is a knurled adjusting disk 18 which is adapted to turn upon said threads and which by a rotation thereof will cause said arm to screw therethrough and to move longitudinally through the ball 4, the direction of movement imparted to said arm being determined by the direction in which said disk is rotated, as also fully set forth in my above mentioned application, Serial No. 429,134. then said disk is turned so as to cause the arm to move outwardly through said ball, the spring 17 will be compressed, whereby such tension is placed thereon as to retract said arm when the disk 18 is turned in the opposite direction, the slot 15 in said arm being sufficiently long to permit the desired longitudinal travel thereof.

Upon the outer end of the motor shaft 3 is a block 19 which is substantially L-shaped in cross section and which is secured to said shaft by means of the set screw 20. Formed through the forwardly projecting portion 21 of said block is an aperture 22 which registers with the apertures 23 in the embracing side flanges 24 of the socket member 25. A pivot pin 26 is passed through the registering apertures in said parts, whereby the socket member becomes hinged to the block 19 on the motor shaft. Formed in the outer face of the socket member 25 is a socket 27 adapted to freely receive the ball 28 on the inner end of the arm 8 which is seated there in to form a ball and socket joint between said arm and said hinged member, said ball being confined in said socket by the retaining plate 29 through which the arm 8 passes and which is secured to the face of the hinged member over the socket 27 therein. The position of the socket 27 in the member 25 is such that when the parts are in their normal position, as shown in Fig. 2, said socket stands in axial alinement with the motor shaft so that the vibratory arm, the ball 28 of which engages in said socket, will also stand in axial alinement with said shaft, a position of parts in which no gyratory movement is imparted to said arm as the motor shaft revolves. By turning the disk 18 so as to cause the arm 8 to move outwardly through the ball 4, the hinged socket member 25 will be swung upon its pivot, thereby carrying the socket therein out of alinement with the axis of the motor shaft, and causing the arm 8 to swing to a slightly oblique position, the ball 1 through which the arm passes turning in the bearing shells to accommodate this movement. A rotation of the motor shaft with the parts in this position will cause the arm 8 to gyrate and impart the desired vibratory movement to the applicator, which movement may be varied at will by moving the vibratory arm longitudinally through a rotation of the disk 18 threaded thereon; the greater distance the point of jointed engagement between the inner end of the vibratory arm and the hinged socket plate is moved out of axial alinement with the motor shaft, the greater will be the vibratory movement imparted to the applicator 13, as will be well understood. By rotating the disk 18 so as to cause the vibratory arm to move inwardly, the hinged socket member 25 in contact with the inner end of said arm will be caused to close onto the block 19 and return the vibratory arm into axial alinement with the motor shaft. This means of regulating the vibratory movement imparted to the applicator is very simple and enables an adjustment of the apparatus while the motor is running.

Having thus fully set forth my invention, what I claim as new and desire to secure by Letters Patent, is

1. In a vibrator, a frame, a rotary member thereon, a socket member hinged to said rotary member, a pivotal joint on said frame, a pivoted arm mounted in said joint to move longitudinally therethrough, an applicator on the outer end of said arm, a ball on the inner end of said arm lying in the socketof said hinged member, and means for moving said. arm longitudinally.

2. A vibrator, comprising a frame, a rotary member thereon, a socket member hinged to the rotary member at a pointout of alinement with its axis of rotation, a universal joint on the frame, a vibratory arm mounted in said joint to move longitudinally therethrough, an applicator on the outer end of said arm, a ball on the inner end of said arm engaging in the socket of said hinged member, and means for swinging the hinged member to carry the point of jointed engagement with the arm therewith out of axial alinement with the rotary member. I

3. A vibrator, comprising a frame, a retary member thereon, a socket member hinged to the rotary member at a point out W of alinement with the axis of the rotary member, a universal joint on the frame, a vibratory arm mounted in said joint to move longitudinally therethrough, an applicator on the outer end of said arm, a ball on the inner end of said arm engaging in the socket of the hinged member, and means for ad justing said arm longitudinally through the universal joint to adjust said hinged member.

4. A vibrator, comprising a frame, a uni versal joint on the frame, a vibratory arm mounted in said joint to move longitudinally therethrough, an applicator on the outer end of said arm, a rotary member on the frame, a member having a hinged con-- nection with the rotary member at a point out of axial alinement therewith, the inner end of said arm having a jointed connection with said hinged member, and means for moving the arm longitudinally through the universal joint to adjust the connection between the hinged member and said arm.

5. A vibrator, comprising a frame, a universal joint 011 the frame, a vibratory arm mounted in said joint to move longitudinally therethrough, an applicator connected with the outer end of said arm, a rotary member on the frame, a member hinged to the rotary member at a point out of axial alinement therewith, said hinged member having a socket therein normally in axial alinement with said rotary member, a ball upon the inner end of the vibratory arm engaging in the socket of the hinged member, and means exterior of the frame for adjusting the Vibratory arm longitudinally through said universal joint to move 5 the point of jointed connection between said arm and the hinged member out of axial alinement with said rotary member.

cation in the presence of two Witnesses.

ALFRED J. STECKER.

\Vitnesses I. G. HOWLETT,

i LEONARD F. TINEMAN.

In testimony whereof, I sign this specifi- 

